# Help with Collisons

## Homework Statement

hey everybody i got a problem but do not know how to do it, A 2.0 kg frictionless cart is moving at a constant speed of 3.0m/s to the right on a horizontal surface. it then collides with a mass that is at rest. as a result the cart acquires a speed of 1.6m/s. Neglect friction.

Caluclate magnitude and direction of the velocity of the 2.0 kg cart after the collison
Calculate mass of the second cart.

## Homework Equations

Im not sure what equations i need to use so thats why i am here.

## The Attempt at a Solution

Related Introductory Physics Homework Help News on Phys.org
rl.bhat
Homework Helper

## Homework Statement

hey everybody i got a problem but do not know how to do it, A 2.0 kg frictionless cart is moving at a constant speed of 3.0m/s to the right on a horizontal surface. it then collides with a mass that is at rest. as a result the cart acquires a speed of 1.6m/s. Neglect friction.

Caluclate magnitude and direction of the velocity of the 2.0 kg cart after the collison
Calculate mass of the second cart.
.
Hi Fabio, welcome to PF.

Which final velocity is given? Cart or mass?